The identification method is as follows: cataract is a state where the eyeball is not bright and cloudy, the dog's vision will decrease, and the eyeball can be obviously whitened to the naked eye; keratitis is a state where the cornea in the eye appears red, bloodshot, and edema, and the eyeball There will be no significant changes. We hope that owners will identify the problem carefully when they find a problem with their dog’s eyes to avoid wrong treatment.